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(x + 31)/2 = - 5/9(28 - x)
(x + 31)/2 = - 5 - 5x/9
x + 31 = 2(- 5 - 5x/9)
x + 31 = - 10 - 10x/9
x/1 + 10x/9 = -10 - 31
(9x + 10x)/9 = - 41
19x/9 = - 41
19x = - 41(9)
19x = - 369
x = - 369/19